Class ComponentAdapter
java.lang.Object
java.awt.event.ComponentAdapter
- All Implemented Interfaces:
ComponentListener,EventListener
- Direct Known Subclasses:
BasicSliderUI.ComponentHandler,BasicTreeUI.ComponentHandler,JViewport.ViewListener
An abstract adapter class for receiving component events.
The methods in this class are empty. This class exists as
convenience for creating listener objects.
Extend this class to create a ComponentEvent listener
and override the methods for the events of interest. (If you implement the
ComponentListener interface, you have to define all of
the methods in it. This abstract class defines null methods for them
all, so you can only have to define methods for events you care about.)
Create a listener object using your class and then register it with a
component using the component's addComponentListener
method. When the component's size, location, or visibility
changes, the relevant method in the listener object is invoked,
and the ComponentEvent is passed to it.
- Since:
- 1.1
- See Also:
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionvoidInvoked when the component has been made invisible.voidInvoked when the component's position changes.voidInvoked when the component's size changes.voidInvoked when the component has been made visible.
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Constructor Details
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ComponentAdapter
protected ComponentAdapter()Constructs aComponentAdapter.
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Method Details
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componentResized
Invoked when the component's size changes.- Specified by:
componentResizedin interfaceComponentListener- Parameters:
e- the event to be processed
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componentMoved
Invoked when the component's position changes.- Specified by:
componentMovedin interfaceComponentListener- Parameters:
e- the event to be processed
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componentShown
Invoked when the component has been made visible.- Specified by:
componentShownin interfaceComponentListener- Parameters:
e- the event to be processed
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componentHidden
Invoked when the component has been made invisible.- Specified by:
componentHiddenin interfaceComponentListener- Parameters:
e- the event to be processed
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